hackle

英 /'hækl/ 美 /'hækəl/

中文释义

vt.梳理，乱砍

n.锯齿形，颈上的羽毛，针排

Three kinds of flight cross sections were researched including rectangular section, hackle section and trapezoid section.

本文讨论的螺纹断面形状为三种:矩形断面、锯齿形断面,梯形断面.
There : bearskin cap and hackle plume.

在那儿,戴着插有鸟颈毛的熊皮帽.
Firstly, hackle prevalence and inheritance of the ancient Chinese mathematics, medicine, astronomy. etc.

首先, 对中国古代数学、医学、天文学等学科知识的传承进行梳理.